JPS6133397U - High frequency discharge lamp lighting device - Google Patents
High frequency discharge lamp lighting deviceInfo
- Publication number
- JPS6133397U JPS6133397U JP11867184U JP11867184U JPS6133397U JP S6133397 U JPS6133397 U JP S6133397U JP 11867184 U JP11867184 U JP 11867184U JP 11867184 U JP11867184 U JP 11867184U JP S6133397 U JPS6133397 U JP S6133397U
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- lighting device
- voltage
- lamp lighting
- high frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案の実施例を示す回路図、第２図は他の
実施例を示す要部の回路図である。
１・・・・・・放電灯、２・・・・・・高周波インバー
タ、３，４・・・・・・トランジスタ、９・・・・・・
直流電源、１１・・・・・・、 トランジスタ、２０・
・・・・・比較器。FIG. 1 is a circuit diagram showing an embodiment of this invention, and FIG. 2 is a circuit diagram of main parts showing another embodiment. 1... Discharge lamp, 2... High frequency inverter, 3, 4... Transistor, 9...
DC power supply, 11..., transistor, 20.
...Comparator.
Claims (1)
ンバータ、前記高周波インバータの出力によって点灯さ
れる放電灯、前記トランジスタのヘース、エミツタ間の
電圧に基づく電圧と基準電圧とを比較し、前記トランジ
スタに異常な犬電流が流れたことによって前記ベース、
エミツタ間の電圧に基づく電圧が、前記基準電圧より低
下したときに出力を出す比較器、前記比較器の出力によ
り前記高周波インバータの動作を停止させる回路とから
なる高周波放電灯点灯装置。A high-frequency inverter equipped with transistors that are turned on and off alternately; a discharge lamp that is lit by the output of the high-frequency inverter; a voltage based on the voltage between the heath and emitter of the transistor is compared with a reference voltage; The said base by the dog current flowing,
A high-frequency discharge lamp lighting device comprising: a comparator that outputs an output when a voltage based on a voltage between emitters falls below the reference voltage; and a circuit that stops the operation of the high-frequency inverter based on the output of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11867184U JPS6133397U (en) | 1984-07-31 | 1984-07-31 | High frequency discharge lamp lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11867184U JPS6133397U (en) | 1984-07-31 | 1984-07-31 | High frequency discharge lamp lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6133397U true JPS6133397U (en) | 1986-02-28 |
Family
ID=30677552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11867184U Pending JPS6133397U (en) | 1984-07-31 | 1984-07-31 | High frequency discharge lamp lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6133397U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637398B2 (en) * | 1975-09-03 | 1981-08-31 | ||
| JPS5974727A (en) * | 1982-10-22 | 1984-04-27 | Fuji Electric Co Ltd | Overcurrent protecting circuit of transistor |
-
1984
- 1984-07-31 JP JP11867184U patent/JPS6133397U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637398B2 (en) * | 1975-09-03 | 1981-08-31 | ||
| JPS5974727A (en) * | 1982-10-22 | 1984-04-27 | Fuji Electric Co Ltd | Overcurrent protecting circuit of transistor |
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